Evoked Hemodynamic Response Estimation to Auditory Stimulus Using Recursive Least Squares Adaptive Filtering with Multidistance Measurement of Near-Infrared Spectroscopy

<div>RLS adaptive filtering to remove physiological interference. (a) Reference measurements of Δ[HHb] calculated from S2-D1 with 13 mm source-detector separation and (b) its block averaged result. (c, d) Target measurements from S2-D3 with 35 mm source-detector separation. (e, f) Low-pass filtering result for the target measurements. (g, h) RLS adaptive filtering results for target measurements. (i, j) Adaptive filtering result with PVE compensation.</div>

Journal of Healthcare Engineering

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Figure 5

Figure 5: Evoked Hemodynamic Response Estimation to Auditory Stimulus Using Recursive Least Squares Adaptive Filtering with Multidistance Measurement of Near-Infrared Spectroscopy 

Figure 5 | Evoked Hemodynamic Response Estimation to Auditory Stimulus Using Recursive Least Squares Adaptive Filtering with Multidistance Measurement of Near-Infrared Spectroscopy 